Superman's abilities have varied wildly over the years of comic-book history, but his most common powers include the following:
- Strength: Superman easily lifts hundreds or thousands of tons of mass.
- Toughness/Invulnerability: Superman easily resists the impact of bullets, and he can survive small thermonuclear blasts without significant harm.
- Flight: He can propel himself through the air or space without noticeable effort.
- Vision: He can see objects at a distance as if through a high-powered telescope, and close objects as if through a microscope. He can also use "x-ray vision" to see through solid matter and "heat vision" to dramatically increase the temperature of anything he is looking at at will.
- Speed: He can run or fly at supersonic speeds.
Superman has some specific vulnerabilities. Certain minerals from his destroyed homeworld release radiation that is extremely toxic to him, and his invulnerability provides no special resistance to psionic powers or magic.
Other Kryptonians typically have similar attributes, usually including a female cousin and some Kryptonian criminals (supervillains).